//判断本地存储中是否有userInfo这个字段，如果有就return  true 没有就return false
import {useState} from "react"
export default function (initialState:object){
    let [userInfo,setInfo]=useState(initialState)
    let isLogin=JSON.parse(sessionStorage.getItem('userInfo')|| '{}')
    function setUserInfo(newState:object){
        setInfo(newState)
    }
    return [isLogin,setUserInfo]
}